Were they used for protection or standing on? How were they racked?

The blocks were used for both direct aid and protection. I stacked them with big tricams, bongs and home made number 6 "Friends". I got really scared but in hindsight, I think each placement was pretty solid. Well, so long as they were weighted... Racked 'em just like nuts - they are drilled for slings.

Was that helpful, Jeffeos?

More than helpful. Look back to my original query; I must have been feeling silly that day.

None the less, awesome to hear of how your used them blocks aside from the obvious fact they served as protection.